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Posted to common-dev@hadoop.apache.org by "Yongjun Zhang (JIRA)" <ji...@apache.org> on 2017/05/15 19:55:04 UTC
[jira] [Reopened] (HADOOP-14407) DistCp - Introduce a configurable
copy buffer size
[ https://issues.apache.org/jira/browse/HADOOP-14407?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yongjun Zhang reopened HADOOP-14407:
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> DistCp - Introduce a configurable copy buffer size
> --------------------------------------------------
>
> Key: HADOOP-14407
> URL: https://issues.apache.org/jira/browse/HADOOP-14407
> Project: Hadoop Common
> Issue Type: Improvement
> Components: tools/distcp
> Affects Versions: 2.9.0
> Reporter: Omkar Aradhya K S
> Assignee: Omkar Aradhya K S
> Fix For: 2.9.0, 3.0.0-alpha3
>
> Attachments: HADOOP-14407.001.patch
>
>
> Currently, the RetriableFileCopyCommand has a fixed copy buffer size of just 8KB. We have noticed in our performance tests that with bigger buffer sizes we saw upto ~3x performance boost. Hence, making the copy buffer size a configurable setting via the new parameter <copybuffersize>.
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